The origin of “It’s raining cats and dogs”

cat loves rain

What is it now? First you’re complaining that we cats don’t use the balcony, but when I do, you’re still moaning?

cat prefers rain to sun

Just because you like the balcony better on sunny days, doesn’t mean that I share your preferences. I like cold and wet surfaces a lot! Didn’t you know that cats are aquatic animals? Or where did you think the saying “it’s raining cats and dogs” comes from?